JP2551319Y2 - Mounting structure of obstacle detection switch in shutter curtain - Google Patents

Description

Detailed description of the invention [Industrial application field] The present invention relates to a mounting structure of an obstacle detection switch in a shutter curtain, and more specifically, a long elastic switch contacts an obstacle when the shutter curtain is lowered. When it is, even if the contact pressure is small, it can be converted to a large contact pressure to make the obstacle detection sensitivity sensitive,
This is related to the mounting structure of an obstacle detection switch used to stop the shutter curtain in response to even small foreign matter such as pebbles instantaneously, ensure safety when the shutter curtain descends, and prevent damage to the shutter curtain. It is.

[Prior Art] Conventionally, there are various types of mounting structures of an obstacle detection switch in a shutter curtain. For example, there is a device described in Japanese Utility Model Publication No. 55-110695 in the old days.
Further, recently, there is an invention described in JP-A-63-189586.

However, the conventional one has a long elastic switch attached to the lower end of the end slat, but when the elastic switch comes into contact with an obstacle when the shutter curtain descends, a small contact pressure from the obstacle is generated. Nothing was installed so that it could be converted into a large contact pressure and any obstacle could be detected instantaneously.

For this reason, in the conventional system, if the obstacle to be detected is a person or a foreign object with a relatively large contact pressure, it can be detected to ensure safety and prevent damage to the shutter curtain, but the comparison of the contact pressure Since it was not possible to detect small foreign matter such as small pebbles, the shutter curtain was closed as it was, and the airtightness and watertightness, which are the essential functions of the shutter, were impaired.

[Problem to be solved by the present invention] In view of the above-mentioned situation, the present invention has been created in order to eliminate the conventional inconveniences. By installing the long elastic switch so that the obstacle detection sensitivity can always be kept sensitive, when the long elastic switch comes in contact with the obstacle when the shutter curtain is lowered, the contact pressure from the obstacle is large. Of course, even if it is relatively weak, it responds instantaneously and stops the shutter curtain from descending, ensuring safety when the shutter curtain descends and preventing damage to it. Another object of the present invention is to provide an installation structure of an obstacle detection switch in a shutter curtain that can sufficiently maintain airtightness and watertightness.

[Means for Solving the Problems] In order to solve the above-mentioned problems, a technical means adopted by the present invention is a long-shaped member in which a pair of strip-shaped conductive members are separately provided on upper and lower opposing surfaces in an elastic hollow insulating portion. In order to extend the elastic switch over substantially the entire length in the longitudinal direction on the lower surface of the end slat connected to the lowermost portion of the shutter curtain, a lock projecting on the lower surface of the end slat and on the upper surface of the long elastic switch. A storage portion for storing the ridge portion is provided, and a pair of downwardly-facing hanging pieces are respectively extended from the storage portion to just above the elastic hollow insulating portion located therebelow, and the long elasticity of the shutter curtain descends. When an obstacle comes into contact with the switch from below, the elongate elastic switch is configured to be pressed from above by the leading edge of each downwardly moving piece.

[Operation of the present invention] Therefore, according to the present invention, when the long elastic switch attached to the lower end of the end slat comes into contact with an obstacle when the shutter curtain descends, the obstruction generated at that time causes the obstacle to move upward. Due to the contact pressure, the elongate elastic switch is compressed and deformed at the obstacle portion, and at the same time, the drooping piece of the storage part that houses the upper part of the elongate elastic switch on the shutter curtain side faces the upper surface of the elongate elastic switch. Since the upper band-shaped conductive member is pressed in a line contact state from above through the upper side, the compression deformation of the long elastic switch is further promoted, and the band-shaped conductive member vertically spaced apart in the long elastic switch is provided. The member is instantaneously turned on by the synergistic compression effect of the contact pressure from below by the obstacle and the line contact pressure by the hanging piece moving downward from above.

Therefore, even if the obstacle is a foreign matter such as a pebble, it can always be reliably detected, and the opening and closing control of the shutter curtain can be performed safely.

[Embodiment] An embodiment of the present invention will be described with reference to an embodiment shown in the drawings. In Fig. 1, reference numeral 1 denotes an electric window shutter in which a mounting structure of an obstacle detection switch is implemented. 1 includes a shutter curtain 3 configured to be able to move up and down by a drive motor (not shown) provided in a shutter case 2 and a pair of left and right guide rails 4 for guiding the shutter curtain 3 up and down. The shutter slat 5 is configured to be freely foldable up and down, and an end slat 6 which is slightly longer than other shutter slats 5 is attached to the lower end thereof.
And the lower frame (draining plate) 7 is opened and closed.

On the indoor side of the end slat 6, a case 8 containing an infrared light emitting device having an infrared light emitting element and an infrared light emitting circuit (not shown) and a dry battery as a power supply is mounted. A light receiving element 9 for receiving the infrared signal and stopping the drive motor is provided facing the light emitting element.

In the above embodiment, a signal using an infrared signal as a signal for stopping the drive motor is shown. However, the present invention is not limited to this, and a flash type or a light type may be used. In the case of using infrared rays as in the example, if the bottomed cylindrical body is mounted around the outer periphery of the light receiving element 9 with the open side facing downward, the influence of external rays such as sunlight can be reduced as much as possible. Is convenient.

As shown in FIGS. 2 and 3, the end slat 6 is formed in a hollow shape having a vertically long cross section, and a base holding frame 11 of a long elastic switch 10 is provided at a lower end thereof. That is, the base holding frame 11 is a lower wall of the end slat 6.
12 and side walls 13, 13 integrally extending below the lower wall 12.
Holding portion 14 formed by bending the front end of the holding portion inward, and the hanging piece 1 formed by narrowing the front end side of the holding portion 14 inward and hanging downward.
Opening groove 1 formed between 5, 15 and the facing pieces 15, 15
6 and the storage section 17 are formed.
The locking ridge 10a protruding from the upper surface of the end slat 6 is housed and held in the housing 17 via the opening groove 16, and the long elastic switch 10 is fitted over substantially the entire length of the end slat 6 in the longitudinal direction. Will be done.

On the other hand, the long elastic switch 10 has a pair of upper belt-like conductive members 19 and lower belt-like conductive members 20 which are vertically separated from each other in the elastic hollow insulating part 18 and is long as described above. When the locking projection 10a of the elastic switch 10 is stored in the storage portion 17, the lower edges of the hanging pieces 15, 15 are located immediately above the elastic hollow insulating portion 18, that is, the upper band-shaped conductive member 19 in the elastic hollow insulating portion 18.
Is located just above. Further, gaps 21 and 21 are formed between both end edges of the upper band-shaped conductive member 19 and the inner wall of the elastic hollow insulating portion 18, and when the long elastic switch 10 comes into contact with an obstacle, its compression deformation is increased. Strip-shaped conductive member
Compressive deformation without being hindered by the 19 edges
The belt-shaped conductive members 19 and 20 are reliably turned on. It is needless to say again that the strip-shaped conductive members 19 and 20 are connected to the infrared light emitting device via lead wires (not shown). 22 is an obstacle.

Next, the operation of the present invention configured as described above will be described.

Now, when the shutter curtain 3 is lowered in order to close the opening of the window shutter 1, if there is an obstacle 22 on the lower frame (draining plate) 7, the obstacle 22 has a long elastic switch 10. Contact with the elastic switch at the obstacle part
10 is compressed and deformed as shown in FIG.
Electricity is supplied between the terminals 9 and 20, whereby the infrared light emitting device is operated, an infrared signal is transmitted from the infrared light emitting element, and the light receiving element receiving the signal is operated to stop the drive motor.

On the other hand, when the obstacle 22 is not present, the long elastic switch 10 comes into contact with the lower frame (draining plate) 7, the drive motor is stopped by a limit switch (not shown), the opening is closed, and the indoor airtightness is improved. Water tightness is maintained.

In the closing process of the shutter curtain 3 as described above, in the present invention, in particular, the lower end edges of the hanging pieces 15, 15 formed on the base holding frame 11 of the long elastic switch 10 are located immediately above the upper band-shaped conductive member 19. Therefore, when the elongated elastic switch 10 comes into contact with the obstacle 22 and is compressed and deformed, the lower surface of the elongated elastic switch 10 is deformed and the lower belt-shaped conductive member 20 is pressed. The lower edge of the hanging pieces 15, 15 moves down with the lowering of the long elastic switch.
The upper belt-shaped conductive member 19 is pressed from above through the upper surface of the wire 10 in a line contact state.

Here, a pressing force from above and below is applied to the long elastic switch 10 at the same time, and a gap 21 formed between both end edges of the upper band-shaped conductive member 19 and the inner wall of the elastic hollow insulating portion 18 is formed. With the deformation of 21, the compression deformation of the long elastic switch 10 is further promoted, and the strip-shaped conductive members 19 and 20 spaced apart from each other at the top and bottom are caused by the contact pressure from the obstacle and the hanging piece of the base holding frame 11. Due to the synergistic compression action with the line contact pressure by the lower edges of 15, 15, the power is instantaneously turned on.

Therefore, even if the obstacle 22 is a foreign matter such as a pebble, it can always be detected reliably, and the opening and closing control of the shutter curtain 3 can be performed safely. When an infrared signal is used as the obstacle detection signal, the light receiving element 9 is used.
If the bottomed tubular body is mounted around the outer periphery of the device with the open side of the bottom facing downward, the influence of external light such as sunlight can be reduced as much as possible, and miscommunication can be prevented.

[Effects of the Invention] In short, the present invention provides a long elastic switch having a pair of strip-shaped conductive members spaced apart from each other on upper and lower opposing surfaces in an elastic hollow insulating portion, and an end connected to the lowermost portion of the shutter curtain. In order to extend over substantially the entire width in the longitudinal direction on the lower surface of the slat, a storage portion is provided on the lower surface of the end slat for accommodating a locking ridge projecting from the upper surface of the long elastic switch. A pair of hanging pieces extending from the storage section to just above the elastic hollow insulating section located therebelow, and when an obstacle comes in contact with the long elastic switch of the descending shutter curtain from below, the lower section is lowered. Since the long elastic switch is configured to be pressed from above by the leading edge of each moving dropping piece, when an obstacle comes in contact with the long elastic switch when the shutter curtain is lowered, the long elastic switch is connected to the long elastic switch. The lower surface of the elastic switch is pressed, and for the contact pressure from the obstacle received from below, each of the hanging pieces extending below the storage section sharply moves the upper surface of the elongated elastic switch from above by the linear contact pressure. Since the pressing is performed, the compressive deformation action in the vertical direction in the long elastic switch is reliably performed,
The belt-shaped conductive member provided inside can be instantaneously energized, and the sensitivity of the obstacle detection is made to act sensitively, and even if the obstacle is a foreign object such as a pebble, it is reliably detected and the shutter curtain is stopped. It is possible to secure the safety when the shutter curtain descends and prevent its damage, and to improve the function of obstacle detection while securing the airtightness and watertightness when the shutter curtain is closed. , Etc., which have extremely useful practical effects.

[Brief description of the drawings]

The drawings show an embodiment of the mounting structure of the obstacle detection switch in the shutter curtain according to the present invention. FIG. 1 is an overall front view of a window shutter, and FIG. 2 and FIG. FIG. 1. Window shutter 2. Shutter case 3.
Shutter curtain, 4 ... Guide rail, 5 ... Shutter slat, 6 ... End slat, 7 ... Bottom frame (draining plate), 8 ... Case, 9 ... Light receiving element, 10 ... Long elastic switch , 10a: locking projection, 11: base holding frame, 12: lower wall of end slat, 13: side wall of end slat, 14: holding part, 15: hanging piece, 16: opening Groove, 17 ... storage section, 18 ... elastic hollow insulating section, 19 ... upper band-shaped conductive member, 20 ... lower band-shaped conductive member, 21 ... gap,
22 ... obstacle

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Katsuhiko Nishiwaki, creator Sanwa Shutter Industry Co., Ltd. 2-1-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo (56) References JP-A-63-151787 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. A long elastic switch comprising a pair of strip-shaped conductive members spaced apart from each other on upper and lower opposing surfaces in an elastic hollow insulating portion,
In order to extend over substantially the entire length in the longitudinal direction on the lower surface of the end slat connected to the lowermost portion of the shutter curtain, a locking ridge projecting from the upper surface of the long elastic switch is provided on the lower surface of the end slat. A storage part for storing is provided, and a pair of hanging pieces facing away from each other are respectively extended from the storage part to a position directly above the elastic hollow insulating part located thereunder. An obstruction detection switch mounting structure in a shutter curtain, wherein when the abutment comes from below, the elongated elastic switch is pressed from above by the leading edge of each downwardly moving piece.